/Engine/Source/Editor/PropertyEditor/Public/MaterialList.h
A Material item in a material list slot
struct FMaterialListItem
bool
bCanBeReplaced
Whether or not this material can be replaced by a new material
TWeakObjectPtr<...
CurrentComponent
The current component using the current material
TWeakObjectPtr<...
Material
Material being used
int32
SlotIndex
Slot on a component where this material is at (mesh element)